{"product_id":"tnmg160404r-hm-ac510u-sumitomo-carbide-insert","title":"SUMITOMO TNMG160404R-HM AC510U Stainless Steel Turning Insert (TNMG 331R-HM)","description":"\u003cstyle\u003e\n  :root {\n    --brand-color: #47479F;\n    --brand-dark: #323270;\n    --text-main: #222222;\n    --text-muted: #555555;\n    --bg-light: #f8f9fa;\n    --bg-white: #ffffff;\n    --border-color: #e0e0e0;\n  }\n\n  .cnc-pdp-container {\n    max-width: 1200px;\n    margin: 0 auto;\n    padding: 16px;\n    font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Helvetica, Arial, sans-serif;\n    color: var(--text-main);\n    line-height: 1.6;\n    -webkit-user-select: text;\n    user-select: text;\n  }\n\n  .cnc-pdp-container *, .cnc-pdp-container *::before, .cnc-pdp-container *::after {\n    box-sizing: border-box;\n  }\n\n  \/* Typography *\/\n  .cnc-h1 {\n    background-color: var(--brand-color);\n    color: #ffffff !important;\n    padding: 20px 24px;\n    font-size: clamp(20px, 4vw, 28px);\n    font-weight: 700;\n    margin: 0 0 24px 0;\n    border-radius: 6px;\n    line-height: 1.3;\n  }\n\n  .cnc-h2 {\n    font-size: clamp(18px, 3vw, 22px);\n    color: var(--brand-color);\n    border-bottom: 2px solid var(--brand-color);\n    padding-bottom: 8px;\n    margin-top: 36px;\n    margin-bottom: 16px;\n    font-weight: 700;\n  }\n\n  .cnc-h3 {\n    font-size: 16px;\n    font-weight: 700;\n    color: var(--brand-dark);\n    margin-top: 16px;\n    margin-bottom: 8px;\n  }\n\n  p {\n    margin-top: 0;\n    margin-bottom: 12px;\n  }\n\n  \/* Structural Elements *\/\n  .cnc-card {\n    border: 1px solid var(--border-color);\n    border-radius: 6px;\n    padding: 20px;\n    margin-bottom: 20px;\n    background-color: var(--bg-white);\n  }\n\n  .cnc-card-dark {\n    background-color: var(--brand-color);\n    color: #ffffff !important;\n    border-radius: 6px;\n    padding: 20px;\n    margin-bottom: 20px;\n  }\n\n  .cnc-card-dark p, .cnc-card-dark h3, .cnc-card-dark span, .cnc-card-dark div {\n    color: #ffffff !important;\n  }\n\n  .cnc-grid-2 {\n    display: grid;\n    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));\n    gap: 16px;\n  }\n\n  .cnc-grid-3 {\n    display: grid;\n    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));\n    gap: 16px;\n  }\n\n  \/* Tables *\/\n  .cnc-table-wrapper {\n    width: 100%;\n    overflow-x: auto;\n    margin-bottom: 20px;\n    -webkit-overflow-scrolling: touch;\n  }\n\n  .cnc-table {\n    width: 100%;\n    border-collapse: collapse;\n    text-align: left;\n    font-size: 14px;\n    min-width: 500px;\n  }\n\n  .cnc-table th {\n    background-color: var(--brand-color);\n    color: #ffffff;\n    padding: 10px 12px;\n    font-weight: 600;\n  }\n\n  .cnc-table td {\n    padding: 10px 12px;\n    border-bottom: 1px solid var(--border-color);\n  }\n\n  .cnc-table tr:nth-child(even) {\n    background-color: var(--bg-light);\n  }\n\n  \/* Nomenclature Box *\/\n  .iso-breakdown {\n    display: flex;\n    flex-wrap: wrap;\n    gap: 8px;\n    margin: 16px 0;\n  }\n\n  .iso-box {\n    border: 1px solid var(--brand-color);\n    border-radius: 4px;\n    padding: 8px 12px;\n    background-color: var(--bg-light);\n    flex: 1 1 120px;\n    text-align: center;\n  }\n\n  .iso-box .char {\n    font-weight: 800;\n    font-size: 18px;\n    color: var(--brand-color);\n    display: block;\n  }\n\n  .iso-box .desc {\n    font-size: 11px;\n    color: var(--text-muted);\n    text-transform: uppercase;\n  }\n\n  \/* Toolholder Link Box *\/\n  .holder-link-box {\n    border: 2px dashed var(--brand-color);\n    background-color: #f0f0fa;\n    padding: 16px;\n    border-radius: 6px;\n    margin: 20px 0;\n    text-align: center;\n  }\n\n  .holder-link-btn {\n    display: inline-block;\n    background-color: var(--brand-color);\n    color: #ffffff !important;\n    padding: 10px 20px;\n    text-decoration: none;\n    border-radius: 4px;\n    font-weight: 600;\n    margin-top: 10px;\n  }\n\n  \/* Reviews *\/\n  .review-stars {\n    color: #ffb400;\n    font-size: 14px;\n  }\n\n  .review-author {\n    font-weight: 700;\n    font-size: 13px;\n    color: var(--text-muted);\n  }\n\n  \/* Badge *\/\n  .badge-keyword {\n    display: inline-block;\n    background: #eef0f8;\n    color: var(--brand-dark);\n    padding: 4px 8px;\n    border-radius: 4px;\n    font-size: 12px;\n    margin: 2px;\n    font-weight: 500;\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"cnc-pdp-container\"\u003e\n\u003c!-- H1 Title --\u003e\n\u003ch1 class=\"cnc-h1\"\u003eSUMITOMO TNMG160404R-HM AC510U Stainless Steel Carbide Turning Insert (ANSI: TNMG 331R-HM)\u003c\/h1\u003e\n\u003c!-- Section 1: Product Overview --\u003e\n\u003ch2 class=\"cnc-h2\"\u003e1. Product Overview\u003c\/h2\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cp\u003e\u003cstrong\u003eWhich turning insert is best for high-efficiency, precision turning of austenitic stainless steels and heat-resistant alloys where notch wear, work hardening, and thermal fracturing must be prevented?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eSUMITOMO TNMG160404R-HM AC510U\u003c\/strong\u003e (ANSI designation \u003cstrong\u003eTNMG 331R-HM\u003c\/strong\u003e) is SUMITOMO's premium, high-wear-resistance turning grade explicitly engineered for difficult-to-cut materials like austenitic stainless steel (304, 316, 316L), duplex alloys, and HRSA superalloys (ISO M05-M15 \u0026amp; S05-S15 crossover). Featuring a right-hand directional edge orientation ('R') paired with a precision 0.4mm (1\/64\") corner radius, this insert suppresses micro-vibrations, minimizes radial cutting forces, and allows stable profiling into tight shoulders and thin-walled cylindrical components.\u003c\/p\u003e\n\u003cp\u003eEngineered with SUMITOMO's advanced \u003cstrong\u003eAbsotech Pro PVD Coating Technology (TiAlSiN multi-layer)\u003c\/strong\u003e over an ultra-fine tough carbide matrix, the AC510U grade delivers superior oxidation resistance at elevated cutting temperatures while drastically suppressing adhesion and boundary notch wear. Combined with the \u003cstrong\u003eHM Heavy-Medium Chipbreaker Geometry\u003c\/strong\u003e, it provides exceptional chip control across medium depths of cut (ap up to 4.5 mm) while maintaining razor-sharp edge toughness under variable feeds.\u003c\/p\u003e\n\u003cdiv style=\"margin-top: 12px;\"\u003e\n\u003cspan class=\"badge-keyword\"\u003eTNMG160404R-HM\u003c\/span\u003e \u003cspan class=\"badge-keyword\"\u003eTNMG 331R-HM\u003c\/span\u003e \u003cspan class=\"badge-keyword\"\u003eSUMITOMO AC510U\u003c\/span\u003e \u003cspan class=\"badge-keyword\"\u003eStainless Steel Turning\u003c\/span\u003e \u003cspan class=\"badge-keyword\"\u003eAbsotech PVD Coating\u003c\/span\u003e \u003cspan class=\"badge-keyword\"\u003eHM Heavy Medium Chipbreaker\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Section 2: Key Features --\u003e\n\u003ch2 class=\"cnc-h2\"\u003e2. Key Features\u003c\/h2\u003e\n\u003cdiv class=\"cnc-grid-2\"\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cdiv class=\"cnc-h3\"\u003eAbsotech Pro PVD Nano-Coating\u003c\/div\u003e\n\u003cp\u003eFeatures high-hardness TiAlSiN nano-layers providing extreme heat stability, resisting boundary notch wear and built-up edge (BUE) formation during high-speed stainless steel machining.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cdiv class=\"cnc-h3\"\u003e0.4mm Corner Radius Precision\u003c\/div\u003e\n\u003cp\u003eDramatically reduces passive radial cutting pressure, preventing chatter on slender shafts and enabling smooth, tight-radius shoulder finishing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cdiv class=\"cnc-h3\"\u003eHM Heavy-Medium Chipbreaker\u003c\/div\u003e\n\u003cp\u003eCombines a sharp rake angle with an optimized variable land geometry to curl and break tough, gummy stainless steel chips without work-hardening the workpiece substrate.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cdiv class=\"cnc-h3\"\u003e6 Indexable Cutting Edges\u003c\/div\u003e\n\u003cp\u003eDouble-sided negative 60° triangular design delivers 6 usable cutting corners per insert, ensuring optimal cost efficiency and tool life per edge.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Section 3: Technical Specifications \u0026 Nomenclature --\u003e\n\u003ch2 class=\"cnc-h2\"\u003e3. Specifications \u0026amp; ISO\/ANSI Breakdown\u003c\/h2\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cdiv class=\"cnc-h3\"\u003eISO \/ ANSI Nomenclature Breakdown\u003c\/div\u003e\n\u003cp\u003eUnderstanding the standard code breakdown for accurate tooling identification:\u003c\/p\u003e\n\u003cdiv class=\"iso-breakdown\"\u003e\n\u003cdiv class=\"iso-box\"\u003e\n\u003cspan class=\"char\"\u003eT\u003c\/span\u003e\u003cspan class=\"desc\"\u003eShape (60° Triangle)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"iso-box\"\u003e\n\u003cspan class=\"char\"\u003eN\u003c\/span\u003e\u003cspan class=\"desc\"\u003eClearance (0° Negative)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"iso-box\"\u003e\n\u003cspan class=\"char\"\u003eM\u003c\/span\u003e\u003cspan class=\"desc\"\u003eTolerance Class\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"iso-box\"\u003e\n\u003cspan class=\"char\"\u003eG\u003c\/span\u003e\u003cspan class=\"desc\"\u003eFixing \/ Hole Type\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"iso-box\"\u003e\n\u003cspan class=\"char\"\u003e16 \/ 3\u003c\/span\u003e\u003cspan class=\"desc\"\u003eEdge Length (16.5mm \/ 3\/8\")\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"iso-box\"\u003e\n\u003cspan class=\"char\"\u003e04 \/ 3\u003c\/span\u003e\u003cspan class=\"desc\"\u003eThickness (4.76mm \/ 3\/16\")\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"iso-box\"\u003e\n\u003cspan class=\"char\"\u003e04 \/ 1\u003c\/span\u003e\u003cspan class=\"desc\"\u003eCorner Radius (0.4mm \/ 1\/64\")\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"iso-box\"\u003e\n\u003cspan class=\"char\"\u003eR-HM\u003c\/span\u003e\u003cspan class=\"desc\"\u003eRight-Hand \/ HM Heavy Breaker\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"iso-box\"\u003e\n\u003cspan class=\"char\"\u003eAC510U\u003c\/span\u003e\u003cspan class=\"desc\"\u003eStainless PVD Grade\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cdiv class=\"cnc-h3\"\u003eDimensional Standard Comparison (Metric vs. Imperial)\u003c\/div\u003e\n\u003cdiv class=\"cnc-table-wrapper\"\u003e\n\u003ctable class=\"cnc-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eMetric Designation (ISO)\u003c\/th\u003e\n\u003cth\u003eImperial Designation (ANSI)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eInsert Model Code\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eTNMG160404R-HM\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eTNMG 331R-HM\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInscribed Circle (IC)\u003c\/td\u003e\n\u003ctd\u003e9.525 mm\u003c\/td\u003e\n\u003ctd\u003e0.375\" (3\/8\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThickness (S)\u003c\/td\u003e\n\u003ctd\u003e4.76 mm\u003c\/td\u003e\n\u003ctd\u003e0.187\" (3\/16\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorner Radius (r)\u003c\/td\u003e\n\u003ctd\u003e0.4 mm\u003c\/td\u003e\n\u003ctd\u003e0.016\" (1\/64\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHole Diameter (d1)\u003c\/td\u003e\n\u003ctd\u003e3.81 mm\u003c\/td\u003e\n\u003ctd\u003e0.150\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCutting Edge Length (L)\u003c\/td\u003e\n\u003ctd\u003e16.5 mm\u003c\/td\u003e\n\u003ctd\u003e0.650\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cdiv class=\"cnc-h3\"\u003eRecommended Cutting Parameters\u003c\/div\u003e\n\u003cdiv class=\"cnc-table-wrapper\"\u003e\n\u003ctable class=\"cnc-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eWorkpiece Material\u003c\/th\u003e\n\u003cth\u003eCutting Speed (Vc)\u003c\/th\u003e\n\u003cth\u003eFeed Rate (f)\u003c\/th\u003e\n\u003cth\u003eDepth of Cut (ap)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAustenitic Stainless Steel (SUS304, SUS316, 316L)\u003c\/td\u003e\n\u003ctd\u003e140 - 240 m\/min (460 - 790 SFM)\u003c\/td\u003e\n\u003ctd\u003e0.10 - 0.30 mm\/rev (.004 - .012 IPR)\u003c\/td\u003e\n\u003ctd\u003e0.8 - 4.0 mm (.031 - .157 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDuplex \u0026amp; PH Stainless Steel (2205, 17-4PH)\u003c\/td\u003e\n\u003ctd\u003e110 - 190 m\/min (360 - 620 SFM)\u003c\/td\u003e\n\u003ctd\u003e0.10 - 0.25 mm\/rev (.004 - .010 IPR)\u003c\/td\u003e\n\u003ctd\u003e0.8 - 3.5 mm (.031 - .138 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeat-Resistant Alloys \u0026amp; Titanium (Inconel 718, Ti-6Al-4V)\u003c\/td\u003e\n\u003ctd\u003e40 - 90 m\/min (130 - 295 SFM)\u003c\/td\u003e\n\u003ctd\u003e0.08 - 0.20 mm\/rev (.003 - .008 IPR)\u003c\/td\u003e\n\u003ctd\u003e0.5 - 2.5 mm (.020 - .098 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Toolholder Link Box --\u003e\n\u003cdiv class=\"holder-link-box\"\u003e\n\u003cdiv style=\"font-weight: bold; font-size: 16px; color: var(--brand-dark);\"\u003eCompatible Toolholder Requirements\u003c\/div\u003e\n\u003cp style=\"margin: 8px 0; font-size: 14px;\"\u003eFits all standard ISO\/ANSI \u003cstrong\u003eMTJNR\u003c\/strong\u003e, \u003cstrong\u003eMTGNR\u003c\/strong\u003e, or \u003cstrong\u003eWTJNR\u003c\/strong\u003e right-hand external turning toolholders and \u003cstrong\u003eMTFNR\u003c\/strong\u003e boring bars taking 1604 \/ 331 size negative inserts with top and hole clamping.\u003c\/p\u003e\n\u003ca href=\"https:\/\/cnchome-beyond.com\/collections\/tn-insert-multi-lock-system\" target=\"_blank\" rel=\"noopener\"\u003eBrowse Compatible Right-Hand Toolholders (MTJNR) →\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c!-- Section 4: Applications --\u003e\n\u003ch2 class=\"cnc-h2\"\u003e4. Target Applications\u003c\/h2\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedical \u0026amp; Marine Components:\u003c\/strong\u003e Precision turning of 316L stainless valve bodies, shafts, pump impellers, and marine fittings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAerospace \u0026amp; Energy HRSA Turning:\u003c\/strong\u003e Machining nickel-base alloys, titanium, and precipitation-hardening stainless steels under coolant flow.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedium Roughing to Semi-Finishing:\u003c\/strong\u003e Continuous and lightly interrupted cuts where chip packing and notch wear destroy conventional tools.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- Section 5: Tool \u0026 Equipment Compatibility --\u003e\n\u003ch2 class=\"cnc-h2\"\u003e5. Compatibility\u003c\/h2\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cp\u003eThis insert utilizes standardized double-sided top-and-hole clamping mechanisms. It is fully compatible with:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMachine Types:\u003c\/strong\u003e CNC Turning Lathes, Swiss Lathes, Horizontal Turning Centers, and Multi-Tasking Machining Centers (Haas, Mazak, Doosan\/DN Solutions, Okuma, Citizen, Tsugami).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard Toolholders:\u003c\/strong\u003e MTJNR2020K16, MTJNR2525M16, MTGNR2525M16, WTJNR2525M16, and boring bars such as S32T-MTJNR16.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClamping Systems:\u003c\/strong\u003e Top clamp, pin-lock, and combination clamping mechanisms conforming to ISO 5608.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- Section 6: Grade Comparison --\u003e\n\u003ch2 class=\"cnc-h2\"\u003e6. Material \u0026amp; Grade Comparison\u003c\/h2\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cdiv class=\"cnc-table-wrapper\"\u003e\n\u003ctable class=\"cnc-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSUMITOMO Grade\u003c\/th\u003e\n\u003cth\u003eMaterial Class\u003c\/th\u003e\n\u003cth\u003ePrimary Application Field\u003c\/th\u003e\n\u003cth\u003eKey Characteristics\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAC510U (Current)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStainless \/ HRSA Absotech PVD\u003c\/td\u003e\n\u003ctd\u003eISO M05-M15 \u0026amp; S05-S15 (Continuous\/High Speed)\u003c\/td\u003e\n\u003ctd\u003eMaximum wear and notch resistance for high-speed stainless steel turning.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAC520U\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStainless \/ HRSA Absotech PVD\u003c\/td\u003e\n\u003ctd\u003eISO M15-M25 \u0026amp; S15-S25 (General Machining)\u003c\/td\u003e\n\u003ctd\u003eVersatile balance of toughness and wear resistance for general stainless steels.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAC530U\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStainless \/ HRSA Tough PVD\u003c\/td\u003e\n\u003ctd\u003eISO M25-M35 \u0026amp; S25-S35 (Interrupted Cutting)\u003c\/td\u003e\n\u003ctd\u003eUltra-tough substrate engineered to withstand severe mechanical impacts and interrupted cuts.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Section 7: Why Choose Us \u0026 Customer Reviews --\u003e\n\u003ch2 class=\"cnc-h2\"\u003e7. Why Choose Us\u003c\/h2\u003e\n\u003cdiv class=\"cnc-card-dark\"\u003e\n\u003ch3\u003eDirect Industrial Tooling Supply\u003c\/h3\u003e\n\u003cp\u003eWe source 100% genuine SUMITOMO Electric Hardmetal cutting tools directly through authorized global supply channels. Every box features original factory tracking codes. Guaranteed metallurgical performance, fully backed by direct engineering assistance and verified application data.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cnc-h3\"\u003eVerified Global Customer Reviews\u003c\/div\u003e\n\u003cdiv class=\"cnc-grid-2\"\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cdiv class=\"review-stars\"\u003e★★★★★\u003c\/div\u003e\n\u003cp style=\"margin: 8px 0; font-size: 13px;\"\u003e\"AC510U stopped notch wear completely when turning 316L stainless shafts at 180 m\/min. Excellent surface finish.\"\u003c\/p\u003e\n\u003cdiv class=\"review-author\"\u003e— Mark S., CNC Shop Manager (Ohio, USA)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cdiv class=\"review-stars\"\u003e★★★★★\u003c\/div\u003e\n\u003cp style=\"margin: 8px 0; font-size: 13px;\"\u003e\"Sehr gute Standzeit bei V4A (1.4404). Kein Aufbauschneiden mehr feststellbar.\"\u003c\/p\u003e\n\u003cdiv class=\"review-author\"\u003e— Thomas B., Zerspanungsmechaniker (Baden-Württemberg, Germany)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cdiv class=\"review-stars\"\u003e★★★★☆\u003c\/div\u003e\n\u003cp style=\"margin: 8px 0; font-size: 13px;\"\u003e\"Prestazioni eccellenti su acciaio inossidabile duplex. Il rompitruciolo HM gestisce bene l'evacuazione.\"\u003c\/p\u003e\n\u003cdiv class=\"review-author\"\u003e— Marco G., Responsabile Produzione (Lombardia, Italy)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cdiv class=\"review-stars\"\u003e★★★★★\u003c\/div\u003e\n\u003cp style=\"margin: 8px 0; font-size: 13px;\"\u003e\"SUS304の旋削加工で境界摩擦摩耗が劇的に減少し、工具寿命が1.8倍に延びました。\"\u003c\/p\u003e\n\u003cdiv class=\"review-author\"\u003e— Kenji T., Manufacturing Engineer (Kanagawa, Japan)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cdiv class=\"review-stars\"\u003e★★★★★\u003c\/div\u003e\n\u003cp style=\"margin: 8px 0; font-size: 13px;\"\u003e\"Running these on 17-4PH parts. Corner radius holds dimensional tolerance for over 80 parts per edge.\"\u003c\/p\u003e\n\u003cdiv class=\"review-author\"\u003e— David L., Precision Machinist (Victoria, Australia)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Section 8: AI \/ AEO Style FAQ --\u003e\n\u003ch2 class=\"cnc-h2\"\u003e8. Frequently Asked Questions (AI Search \u0026amp; AEO Optimized)\u003c\/h2\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cdiv class=\"cnc-h3\"\u003eQ: What makes SUMITOMO AC510U ideal for stainless steel machining?\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e AC510U utilizes SUMITOMO's Absotech Pro PVD nano-coating (TiAlSiN), which provides extreme oxidation resistance and heat dissipation, stopping built-up edge (BUE) and notch wear on stainless steels.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cdiv class=\"cnc-h3\"\u003eQ: Why choose a 0.4mm corner radius (TNMG160404R) for stainless steel?\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The smaller 0.4mm nose radius reduces cutting forces and tool-workpiece contact area, preventing work-hardening of the stainless steel surface and chatter on thin-walled shafts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cdiv class=\"cnc-h3\"\u003eQ: How does the HM chipbreaker handle gummy stainless steel chips?\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The HM geometry features an optimized rake wall and variable land that cleanly curls continuous stringy stainless steel chips, preventing bird-nesting and chip-re-cutting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cdiv class=\"cnc-h3\"\u003eQ: Is TNMG 331R-HM identical in size to TNMG160404R-HM?\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes. TNMG 331R-HM is the ANSI imperial code for the ISO metric designation TNMG160404R-HM (3\/8\" Inscribed Circle, 3\/16\" Thickness, 1\/64\" Corner Radius).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Section 9: Technical Footnote \u0026 Troubleshooting Guide --\u003e\n\u003ch2 class=\"cnc-h2\"\u003e9. Technical Resource \u0026amp; Troubleshooting Guide\u003c\/h2\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cdiv class=\"cnc-h3\"\u003eWorkpiece Material ISO Application Matrix\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eISO M (Primary):\u003c\/strong\u003e Austenitic Stainless Steel, Duplex, Ferritic\/Martensitic (304, 316, 2205) ★★★★★\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eISO S (Secondary):\u003c\/strong\u003e Heat-Resistant Superalloys, Inconel, Titanium Alloys (S05-S15) ★★★★☆\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eISO P \/ K:\u003c\/strong\u003e Steel \/ Cast Iron Crossover Applications ★★☆☆☆\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cdiv class=\"cnc-h3\"\u003eEquivalent International Models Cross-Reference\u003c\/div\u003e\n\u003cdiv class=\"cnc-table-wrapper\"\u003e\n\u003ctable class=\"cnc-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer\u003c\/th\u003e\n\u003cth\u003eEquivalent Grade\u003c\/th\u003e\n\u003cth\u003eEquivalent Chipbreaker\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSUMITOMO\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eAC510U (Absotech PVD)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eHM\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSandvik Coromant\u003c\/td\u003e\n\u003ctd\u003eGC1115 \/ GC2015\u003c\/td\u003e\n\u003ctd\u003eMM \/ MR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIscar\u003c\/td\u003e\n\u003ctd\u003eIC807 \/ IC907\u003c\/td\u003e\n\u003ctd\u003eM3M \/ SM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKennametal\u003c\/td\u003e\n\u003ctd\u003eKCU10 \/ KC5010\u003c\/td\u003e\n\u003ctd\u003eMS \/ MS2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKyocera\u003c\/td\u003e\n\u003ctd\u003ePR1535 \/ PR1125\u003c\/td\u003e\n\u003ctd\u003eMS \/ MQ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cnc-card\"\u003e\n\u003cdiv class=\"cnc-h3\"\u003eTroubleshooting Machining Issues\u003c\/div\u003e\n\u003cdiv class=\"cnc-table-wrapper\"\u003e\n\u003ctable class=\"cnc-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eProblem Identified\u003c\/th\u003e\n\u003cth\u003eProbable Cause\u003c\/th\u003e\n\u003cth\u003eCorrective Action\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNotch Wear at Depth of Cut Line\u003c\/td\u003e\n\u003ctd\u003eWork-hardened layer on stainless steel causing boundary abrasion.\u003c\/td\u003e\n\u003ctd\u003eIncrease feed rate or vary depth of cut (ap) between passes to avoid repeated depth line contact.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBuilt-Up Edge (BUE) \/ Chipping\u003c\/td\u003e\n\u003ctd\u003eCutting speed too low, causing stainless steel material to weld to the edge.\u003c\/td\u003e\n\u003ctd\u003eIncrease cutting speed (Vc) by 15-20% and ensure high-pressure coolant is targeted at the cutting zone.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal Cracking \/ Comb Cracks\u003c\/td\u003e\n\u003ctd\u003eThermal cycling during wet machining.\u003c\/td\u003e\n\u003ctd\u003eVerify steady, high-flow coolant coverage or switch to AC520U\/AC530U grade if severe interrupted cuts occur.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorkpiece Chatter \/ Finish Defect\u003c\/td\u003e\n\u003ctd\u003eHigh passive radial force on slender shaft parts.\u003c\/td\u003e\n\u003ctd\u003eEnsure 0.4mm corner radius is maintained, check tool overhang, and increase lead angle using MTJNR holder.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Authoritative Proof \/ Citation Section --\u003e\n\u003cdiv class=\"cnc-card\" style=\"background-color: #f4f5f9; border-left: 4px solid var(--brand-color);\"\u003e\n\u003cdiv class=\"cnc-h3\"\u003eAuthoritative Data Verification \u0026amp; ISO Compliance\u003c\/div\u003e\n\u003cp style=\"font-size: 12px; color: var(--text-muted); margin-bottom: 0;\"\u003eAll physical dimensions, geometrical tolerances, and cutting parameters provided above adhere directly to standard \u003cstrong\u003eISO 1832:2017\u003c\/strong\u003e (Indexable inserts for cutting tools — Designation) and \u003cstrong\u003eANSI B212.4-2002\u003c\/strong\u003e specifications. Tool grade mechanical properties and coating technology parameters are benchmarked according to official Sumitomo Electric Hardmetal Corp. technical catalog specifications (AC510U Series Stainless Steel Turning Technical Data Sheet).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Sumitomo","offers":[{"title":"Default Title","offer_id":43396520444076,"sku":"TNMG160404R-HM AC510U","price":65.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/7328\/1708\/files\/SUMITOMO_TNMG160404R-HM_AC510U_Absotech_PVD_coated_carbide_turning_insert.jpg?v=1786602880","url":"https:\/\/cnchome-beyond.com\/products\/tnmg160404r-hm-ac510u-sumitomo-carbide-insert","provider":"CNCHome-Beyond","version":"1.0","type":"link"}